Push catch for doors



NOV- 3, 1931. T. F. STUART l-:T AL 1,830,490

PUSH CATCH FOR DOORS Filed April 11, 1929 77/0/7/'75 FSH/Me 7- ,;0

Patented Nov. 3,v 1931 UNITED STATES H. BRUNNEBQNBOTH OF LOS ANGELES, CALIFORNIA lezirelrrl ol-FlcuA THoMAs E. sTUART AND HENRY A. MOORE, or Los ANGELES, CALIFORNIA; vsArzD STUART AssIGNoR To MARY EVRIGELOW AND SAID MOORE ASSIGNOR `'.IIO ALBERT PUSH cAT'cHVEoR DooRs Application led April 11,

Our invention relates to a push catch for p doors, panels 'and the like, and has for its principal object, the provision. of a relatively simple, practical and readily installed latch device that is Yreleased by the action of a push rod and which latch automatically moves into latching position under `the influence of a spring.

The particular form of push catch herein disclosed is an improvement upon'the push catches set forth in our copending applications for U. S. Letters Patent filed June 29th, 1927, SerialpNo. 202,387, and application Serial No. 243,144, filed December 28th, 1927.

vFurther objects of-our invention are, to generally improve upon and simplify the construction of the push catches disclosed in our aforesaid copending patent applications, as well as other similarforms of latching devices, further to provide a latch that is readily adjustable so that it may be applied `to doors and panels of different thicknesses and further, to provide a latch of the character Vreferred to so thatvit may be utilized in connection'with knobs of glass, metal-or composition and which knobs are provided with threaded portions that are screwed into threaded recesses formed in the doors to which the push catches are applied.

With the foregoing Aand other objects in view, our invention consists incertain novel vfeatures of construction and arrangement of parts that will hereinafter be more fullydescribed and claimed and illustrated in the accompanying drawings, in which:

proved push catch applied thereto. v

Fig. 2 is a top plan view of thehousing'of d the catch and which housing contains the latchin'g bolt and itslactual mechanism. I

' Fig. 3 is a top plan view of the housingof the catch with the cover plate removed.

Fig. 4 is a longitudinal vertical section taken on the line 4 -4 of Fig. 2. Y

Fig. 5 is a longitudinal vertical section taken on the line 5-5 of Fig. 3.

Fig. 6 is an enlarged cross section taken on lthe line 6 6 of Fig. a.

Fig. 7 is aI det-ail elevationalyiew partly 1923. Serial No. 354,213.

that are .bentv from the walls of said housing-"6b inwardly over the edges of said cover plate. Projecting from the'side walls of the hous ing 10 are perforated ears 13 which receive screws 14 and the latter being seated in the door or panel 15 towhich the latch is applied.

Secured to cover plate 11 is an outwardl projecting externally threaded tube 16, the

same projecting through an aperture 17 that is formed in door 15 and screw seated on this threaded tube is theinternally threaded re- "7'1'0 duced inner end portion 18of a tube 19 that extends throughV an axial opening that is formedin a'knob 20, preferably of glass, porcelain, metal or composition.

Projecting inwardly from the body ofthe lknob 20 is an externally threadedlug 21 that is screw seated inl a threaded recess 22, and the latter being'formed in the outer portion of tle door 15 in alignment with the open- 1ng f Arranged to slidev longitudinally within. the housing 10 isla frame 28, frorn'the forward end of which projects a latching member24, the latter projecting through an opening in -thecorresponding end wall of housing 10, and which latching member is adapted to engage behind'a striking plate' 25 that is secured to the jamb 26,- againstl wh-ichv the oor or panel closes. Y j ,The rearward sliding movement offrame 23, within the housing, is resisted'by a spring 27, that is mounted on a support 28,`and which latter engages the rear wall of the housing.v

Pivotally mounted on one of the side wallsl the head that is apagainst an upright portion of the sliding frame 23.

Arranged to slide vertically within the housing 10, directly above the link 29 is a plate 3l having projecting -end portions-32 that enter vertically disposed grooves or guideways 33 and which latter are formedV of the side walls of the ing lip 34 that bears on top of link29 near the point where the latter is nected to plate 30. I A

Rigidly fixed to the center of plate 31 and projecting downwardly through the housing 10 and through an opening35, that ,is formed in the bottom; wall ofsaid housing, isa tubular member V36 that is in directr alignment with tube 16' and the lower-portion'of this tubular` member 36 is internally threaded as designated by 37 in order to receive the externallythreaded end portion 38'ofa push rod 39, and which latter Vextends through the tube 16 and through the tubular memberf19.

The outer endxportion of'pushv rod= 39, or

that. portion that projects from the end of the tube 19 and the outer endv of knob 20, is slightly increased inv diameter, as designated by 40A and mounted on said portionl of in# creased diameteris a tubular shell -41 that carries at its outer end a small head or but- .ton 42. VThe inner end ofthetubular shell 41 is; pressed inwardly and; clamped around Athe shoulder between thevenlarge'd portion 40 and thebody of the push rod 39 (see Fig. 7). rlfheconstruction just described permits the head or button 42 to be readily secured on the outer end of thegpush: rod; l v' Formed in one of the side wallsof housing lOand in ltransverse` alignment with; the tubularmember 36 is a vertically disposed slot 43, throughl which projects a screw 44, 'and-the inner end thereofpasses through: the wall of the tube 36 and bears against the push rod 39, thereby locking-saidpush rod to the tube 36- after said push rodhask been adjusted by screwing same` into and out of said tubular member36.-

l Under normal coditions, or when the door to whichV our improved latch lis" applied is closed spring 27 forces vframe 23 kto its forward limit of movement in housing 10, so

that the latching member 24`is positioned behind thestriking plate 27,-thereby retaining the door in closed. position, as illustrated inFig.1.. Y

To release the latch and open'the door the first and second fingers of the hand' are positionedon opposite sides of the door knob 2O and by 4pressure of the'thumb upon button 42,

-push rodV 39 is moved inwardly a short disopened.

pivotally 'con-V claims.

- the housing against thei resistance; offered by spring 27, Vandwhen {latching member 24 clears the striking plate the door may be 'Upon the removal' of thethumbpressure from the outer end' ofthe push [rod` spring 27 willA act to restore the variousparts of the latchingdevice to their normal position, and when the door is subsequently closed the lbeveled edgev ,ofla-.tching member 24 will engage striking plate 25 and will move into the latch housing until it clears the strikingfplatef and the -compressedspring'27 will now act-to force the frame 23" and latchin-gmember out'-` Vwardly so that. said' latching vmember is'lpositioned behind the striking plate and the door willbe latched in closed position.

Inasmuch as the'.reducedwinner end por'- tion of tube 19 is threaded upon tube 1.6', said tube 19may'be adj usted-toward' o`r awayfrom the housing 10 and as aresult the latch'ma'y befreadily andconveniently combined 'with doors of dierentthicknessesandiwith knobs `of different lengths. f.

The inner end of pushrod 39 hasthreaded engagement with the tubularl niemberr36, thereby enabling:the push rodto b e readily adjusted relative to said tubular'niember 36, and the frame actuating V'plate 31 that is cal'.- ried b'ylsaid' tube and thelscrew 44 provides Simple and etlici'ent vmeans for locking' the push rod.VV to the, tube 36 in. differently ad- 'justedpositions f Y Thus? it will be seen that we have provided a push catch that iSv/relatively simple ini con- -struction, capableof being'easily and quickly applied to a door orsw-ijngingpanel, capable ofibefing' easilyA and quickly adjusted lsofas to be applied todoors and panelsof varying thicknesses and the application of the'catch to ad'oor requires the lformation ofo'nly a 'single-aperture in said door.

doors may be made and substituted for those `herein shown and described without departing from the spirit ofk our invention, the scope of which isset forth inthe appended We claim asour invention:

1. In a push catch .for doors', a housing iadaptedtobe positionedfona door, a spring pressed latch bolt arranged for sliding move- 4ment within said housing, -a pair oftoggle links arranged within saidhousing, one of whichl links is pivoted to the housing, the other link bearing Von a part ofthe latch-bolt, a plate arranged for sliding movementwithin the housing and bearing-on one of the toggle links, 'the' sidewalls ofthe housing adjacent tothe ends of said plate beingV provided with vertically disposed u recessed guideways, extensions on the ends of said sliding plate, which extensions project into said guideways, a tubular member carried by said plate and projecting through an opening in one of the Walls' of the housing and a push rod having its inner end adjustably seated in said tubular member.

2. In a push catch for doors, a housing adapted to be positioned on a door, a spring pressed latch bolt arranged for sliding movement Within said housing, a pair of toggle links arranged Within said housing, one of which links is' pivoted to the housing, the other link bearing on a part of the latch bolt, a plate arranged for sliding movement Within the housing and bearing on one of the toggle links, a tubular member carried by said plate, a push rod having its inner end adjustably seated in saidtubular member and means for locking said push rod to said tubular member in differently adjusted positions the outer portion of Which locking means passes through a slot in one of the Walls in the housing.

3. The combination with a door provided in one side With a threaded recess and a latch housing located on the opposite sideof the door, which latch housing contains a latching bolt and bolt retracting means, of a knob provided on one end With an integral thread 4 that is adapted to be screw-seated in the threaded recess in the door, said knob having an axial bore, a tube seated in the bore in said knob, a threaded tube projecting from said latch housing, the outerend of which threaded tube is screw-seated in the innerend of the tube in said knob, and a longitudinally adjustable rod passing through said tubes for actuating said latch bolt retracting means.

In testimony whereof We aix our signatures.

THOMAS F. STUART. HENRY A. MOORE. 

